东海沿岸海域表层海水酸化趋势及影响因素研究

发布时间：2018-06-22 16:21

本文选题：东海沿岸 + 海水　；参考：《海洋与湖沼》2017年02期

【摘要】：根据2002—2011年东海沿岸海域(4个区域,16个站位)春、夏、秋三个季节的表层海水pH、温度、盐度和叶绿素a等监测资料,对该海域pH的年际时空变化及其影响因素进行了探讨。结果表明,东海沿岸海域表层海水十年间pH变化趋势存在明显的季节和区域差异,共有10个站点表层海水pH呈下降趋势,主要集中于长江口和杭州湾海域,而三门湾和椒江口海域的酸化则不明显。环境因子相关性分析显示,杭州湾海域夏季表层海水的pH与叶绿素a浓度呈极显著正相关,其它海域两者间未显示出显著的相关性;杭州湾海域的pH与海表温度也存在显著的相关性,但季节不同趋势不同,呈现出春季正相关而夏季负相关的特征;pH与盐度的关系在各海域表现得更加明显,长江口、杭州湾和三门湾三个调查海区海水的pH变化与盐度都存在显著的正相关。总之,在10年的连续监测内东海沿岸海域存在一定程度的酸化趋势,其影响机制还需进一步研究。
[Abstract]:Based on the monitoring data of pH, temperature, salinity and chlorophyll a in the coastal waters of the East China Sea (4 regions, 16 stations) in spring, summer and autumn from 2002 to 2011, the interannual temporal and spatial variation of pH and its influencing factors were discussed. The results show that there are obvious seasonal and regional differences in the pH variation of the surface seawater in the coastal waters of the East China Sea during the past decade, and the pH values of the surface seawater in 10 stations show a downward trend, mainly concentrated in the Yangtze River Estuary and Hangzhou Bay. The acidification of Sanmen Bay and Jiaojiang Estuary is not obvious. The correlation analysis of environmental factors showed that there was a very significant positive correlation between pH and chlorophyll a concentration in the surface seawater of Hangzhou Bay in summer, but there was no significant correlation between them in other sea areas. There is also a significant correlation between pH and sea surface temperature in Hangzhou Bay, but different seasonal trends show a positive correlation in spring and negative correlation in summer. The relationship between pH and salinity is more obvious in each sea area, the Changjiang Estuary. There was a significant positive correlation between pH and salinity in Hangzhou Bay and Sanmen Bay. In a word, there is a trend of acidification in the coastal waters of the East China Sea after 10 years of continuous monitoring, and the mechanism of its influence needs to be further studied.
【作者单位】：浙江海洋大学海洋微生物分子生态与应用实验室;浙江省舟山海洋生态环境监测站;
【基金】：国家自然科学基金项目,31270160号,J1310037号浙江省自然科学基金项目,LY12C03003号浙江省大学生新苗人才计划项目,2014R411019号
【分类号】：P734

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